I won't be greeting people with "Merry Christmas". The story to which it refers, the nativity, consists of a prophecy, not a prediction of what might come to pass, but of the type that is pre-destined. The woman, Mary, tells an angel that she hopes the prophecy is fulfilled. This is interpreted by many as consent. Unfortunately, she can't actually give consent. The events have already been set in motion. As told by the Bible, and as repeated by both conservative and liberal Christians, the prophecy is binding, which makes this a story of a rape.
There's only one "out" from Matthew's telling of the story. This "out" is, if the angel's